Amino <i>N</i>‐Oxide Functionalized Conjugated Polymers and their Amino‐Functionalized Precursors: New Cathode Interlayers for High‐Performance Optoelectronic Devices

Guan, Xing; Zhang, Kai; Huang, Fei; Bazan, Guillermo C.; Cao, Yong

doi:10.1002/adfm.201200199

Cited by 109 publications

(94 citation statements)

References 76 publications

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“…但是, 相对应其它界面材料修饰的器件, 基于 PEO 的器件短路电流较低, 这可能是因为 PEO 的导电能力较差, 使得器件的串联电阻升高, 阻碍了电子在阴极的收集和传输, 从而使得电流降低. [28] , PF6NO [28] , PEO (aldrich, M w 10000), PEI (aldrich, …”

Section: %的高效聚合物太阳电池unclassified

Performance Study of Water/Alcohol Soluble Polymer Interface Materials in Polymer Optoelectronic Devices

Zhang¹,

Guan²,

Huang³

et al. 2012

Acta Chim. Sinica

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Four different water/alcohol soluble polymers, poly [9,9-bis(6-(N,N-diethylamino)-hexyl N-oxide)fluorene] (PF6NO), poly[9,9-bis(6-(N,N-diethylamino)-hexyl)fluorene] (PF6N), polyethylene oxide (PEO), polyethylene imine (PEI) were used as interlayer materials in polymer light-emitting diodes (PLEDs) and polymer solar cells (PSCs) with device structures of indium tin oxide (ITO)/poly(3,4-ethylenedioxylenethiophene):poly(styrenesulphonic acid) (PEDOT:PSS)/Active Layer/Interlayer/Al (or Au), where the green light-emitting polymer poly-[2-(4-(3',7'-dimethyloctyloxy)-phenyl)-p-phenylene vinylene] (P-PPV) and photovoltaic material poly-[N-9'-hepta-decanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3-benzothiadiazole) (PCDTBT):[6,6]-phenyl C 71-butyric acid methyl ester (PC 71 BM) were used as the light emitting layer and light absorption layers for PLEDs and PSCs, respectively. The relationships between chemical structure and optoelectronic properties of the polymer interlayer materials were systematically investigated. Photovoltaic measurement were used to determine the built-in potential across the devices and consequently to understand the interface modification abilities of these materials. It was found that the devices based on conjugated interlayer materials exhibited larger open circuit voltages than those of devices based on non-conjugated interlayer materials, which indicates that the conjugated interlayer materials lead to lower energetic barriers for electron. Device studies showed that the conjugated interlayer materials PF6NO and PF6N exhibited much better device performance both in PLEDs and PSCs compared to the non-conjugated interlayer materials PEO and PEI, which was consistent with the photovoltaic measurement results. PLEDs studies indicated that the devices based on non-conjugated interlayer materials PEO and PEI exhibited dramatically decreased efficiencies when the interlayers' thicknesses are more than 20 nm, while the devices based on conjugated interlayer materials PF6NO and PF6N maintained good performances. Moreover, both PLEDs and PSCs device studies indicated that the conjugated interlayer materials show a wide range of adaptability, which work well for both Al and Au electrode devices, while the non-conjugated interlayer materials only work well for the Al electrode devices. Our results indicated that besides the highly polar side chain groups, the conjugated interlayer materials' main chains also play an important role on their excellent interfacial modification ability, which lead to easily electron transporting and wide range of adaptability.

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Section: %的高效聚合物太阳电池unclassified

Performance Study of Water/Alcohol Soluble Polymer Interface Materials in Polymer Optoelectronic Devices

Zhang¹,

Guan²,

Huang³

et al. 2012

Acta Chim. Sinica

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“…The polymer exhibited a high decomposition temperature of 350 C, a broad absorption in the range of 300-900 nm, and a HOMO energy level of 25.16 eV. Finally, the PSC device based on this polymer and [6,6]-phenyl-C 71 -butyric acid methyl ester (PC 71 BM) showed the best power conversion efficiency (PCE) of 4.43% with an open-circuit voltage (V oc ) of 0.66 V, a short-circuit current density (J sc ) of 10.52 mA cm 22 and a fill factor (FF) of 64.11%.…”

Section: -30mentioning

confidence: 99%

“…[1][2][3][4][5][6][7] Recently, PSCs based on conjugated polymers and fullerene derivatives have shown a remarkable breakthrough, the power conversion efficiencies (PCEs) over 8% have been obtained. [8][9][10] In PSCs, the bulk heterojunction device structure, in which the active layer consists of nanoscale bicontinuous phase-separated electron donor and acceptor components, has been proven to be the most successful structure.…”

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Synthesis and characterization of D-A-A type regular terpolymers with narrowed band-gap and their application in high performance polymer solar cells

Dang

Xiaochi

Ying

et al. 2016

Organic Electronics

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“…[ 23 ] PF6N25Py shows the best characteristics in our MoO x /dipole layer/TiO 2 tandem structure as will be discussed later. Details of the device fabrication are described in the Experimental Section.…”

Section: Electrical and Optical Properties Of Moomentioning

confidence: 93%

A New Interconnecting Layer of Metal Oxide/Dipole Layer/Metal Oxide for Efficient Tandem Organic Solar Cells

Guan

et al. 2015

Advanced Energy Materials

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A new metal‐oxide‐based interconnecting layer (ICL) structure of all‐solution processed metal oxide/dipole layer/metal oxide for efficient tandem organic solar cell (OSC) is demonstrated. The dipole layer modifies the work function (WF) of molybdenum oxide (MoO x ) to eliminate preexisted counter diode between MoO x and TiO2. Three different amino functionalized water/alcohol soluble conjugated polymers (WSCPs) are studied to show that the WF tuning of MoO x is controllable. Importantly, the results show that S‐shape current density versus voltage (J–V) characteristics form when operation temperature decreases. This implies that thermionic emission within the dipole layer plays critical role for helping recombination of electrons and holes. Meanwhile, the insignificant homotandem open‐circuit voltage (V oc) loss dependence on dipole layer thickness shows that the quantum tunneling effect is weak for efficient electron and hole recombination. Based on this ICL, poly(3‐hexylthiophene) (P3HT)‐based homotandem OSC with 1.20 V V oc and 3.29% power conversion efficiency (PCE) is achieved. Furthermore, high efficiency poly(4,8‐bis(5‐(2‐ethylhexyl)‐thiophene‐2‐yl)‐benzo[1,2‐b54,5‐b9]dithiophene‐alt alkylcarbonylthieno[3,4‐b]thiophene) (PBDTTT‐C‐T)‐based homotandem OSC with 1.54 V V oc and 8.11% PCE is achieved, with almost 15.53% enhancement compared to its single cell. This metal oxide/dipole layer/metal oxide ICL provides a new strategy to develop other qualified ICL with different hole transporting layer and electron transporting layer in tandem OSCs.

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Amino N‐Oxide Functionalized Conjugated Polymers and their Amino‐Functionalized Precursors: New Cathode Interlayers for High‐Performance Optoelectronic Devices

Cited by 109 publications

References 76 publications

Performance Study of Water/Alcohol Soluble Polymer Interface Materials in Polymer Optoelectronic Devices

Performance Study of Water/Alcohol Soluble Polymer Interface Materials in Polymer Optoelectronic Devices

Synthesis and characterization of D-A-A type regular terpolymers with narrowed band-gap and their application in high performance polymer solar cells

A New Interconnecting Layer of Metal Oxide/Dipole Layer/Metal Oxide for Efficient Tandem Organic Solar Cells

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